Samuel b



(No Model.)

s. B. H. VINCE.

COMBINED GAS AND ELECTRIC LIGHT FIXTURE.

N. PETERS. FhotLnnegnphu. Washingtun, D. C.

ltinrrnn Stearns FFlCiEO artnr *SMENE GAS N LCTRCHLGHT FEXTUR.

SPECIFICATION :forming part of Letters Patent No. 383,159, dated May 22,1888,

Serial. No. 225,975. (No inodcli) To all whom 'it may concern.I

Be it known that l, SAMUEL B. H. VANCE, of the city, county, and State of New York, have invented certain new and useful linproyeinents in Combined Electric an d Gas Fixtures, of which the following is a specification.

This invention relates to certain new and useful improvementsin combined electric and gas iixtures, and itconsistsin thcpeeuliar combinations and the construction, arrangement, and adaptation ot parts, all as inore fully hereinafter described and clainied.

In the drawings anncXcd,Figure l represents a complete elevation of niy improved coin biued bracket, shown partly in section at the swing-joints. liig. 2 is a cross-section on xa', Viewed in the direction of the arrows.

Referring to Fig. l, a a indicate the inain iittings of the swing-joints, and b b the tubular sections ot the bracket, which extend from joint to joint, as usual. The iittings a a are formed, as usual, with the ground-plugs c, which fit gas tight into the ground-sockets d, secured to one end ot' the tubes b, the opposite end of which is screwed into a neck, c, on the side of the next joint-i`itting, or into the terininal fittiug,f, which supports the gas and electric lights, as shown. The ground plugs and sockets of the joints are substantially the saine as in ordinary gasbrackets, except that they are placed in inverted position--that is, the plugs c project troni the top ofthe fitting, with the socket d mounted therein,while from the bottom oi the fitting a tubular neck, y, opens downward in axial line witlithegroundplug c. New, the first fitting, c, at the root end ofthe fixture, is formed with a large lateral neck, t', troni the center of which grojects a narrow nipple, in, which is coupled with the gas-pipe extending frein the wall, asindicated by dotted lines7 in the usual manner. A gaswayt, (shown by dotted lines, extends through this nipple 'in and the neck t' into the body of the fitting, and communicates with a central boie in the plug c, from which a lateral bore opens into groove on the plug, in the usual way, and by which the gas i'lows through the joint into the tube I) to the next joint, and thence by the tube L to the iinal tting, f, where a right-angled passage, o, (shown by dotted lines,) leads to the gas cock ,n and burner s, in about the usual manner, the gaspassages of the joints being therefore substantially the sanic as is usual in ordinary" swing-joints rEhejoints have, of course, also the usual washer and screws (shown at t) to hold the sockets properly on the plugs Kew, k indicates the tubes in which the wires are conducted through the bracket from joint to joint, and which lie parallel to, or, rather, at a slight angle or convergent to the gas tubes.. The viront end of these tubes tit directly and snugly into sockets on thelateral necks c c ol the iittings c and f, just below the gas-tubes b b,wlii1e theinitial end of these tubes is provided with a cup or socket, u, which nts over the tubular necksg on the bot toin oi' the fittings ct a', and these necks have a circumferential groove, o, with which a setscrew, Z, on the caps engages, thus holding the wire-tubes 7,: l.: in tirin position between the swing-joints, and yet permitting the wiretubes to articulate or turn on the necks g coincident with the sockets d o'n the plugs c, as will be understood. Now, a right-angled wire-passage, u, Xtends through the lower part of the fitting a cia the tubular neekg and the lateral socket, into which the wirepipe 7c connects, and a similar right-angled passage extends through the Alitting a, which passage is continued backward through the large neck m, opening at the back of the saine outside of the nipple n. The wires gthus enter the neck m of the rst t-ting a from the wall under the canopy, as shown by dotted lines, and passing through the rightangled passage described issue from the i'irst tubular neck (j into the cup n and thence pass through the tube 7c and through the rightangled passage in the next fitting c into the next cup or tube, and, continuing through said tube, finally pass through a downwardly-turned right-angled passage, a, in the terminal iittingj, as shown by dottedlines, and thus connect to the electric lamp j. It will there fore be seen that this plan not only provides entirely distinct passages for gas and wires, but the construction is siinple and the bracket is strengthened by the wire-tubes 7; it', which act as braces to the gasAtnbes between the joints and at the saine time iinprove the den sign and appearance of the bracket. lt is IOO also easy to thread the wires through the bracket, as the passages are comparatively direct, and when the wire-tubes la 7c are detached, as they easily can be by loosening the screws l, the wires can be easily passed through from joint to joint, after which the wire-tubes can be put back in place, as shown in Fig. 1, thus protecting and entirely concealing the wires. As the wires are bent through the swing-joints just at the axial lines only, the bends lying loosely in the cups u, the wires are hence subjected to the least possible twisting or torsion caused by the motions of the joints.

The wire-tubes might be arranged vin actual .parallel with the gas-tubes; but it is preferred to arrange them in inclined steps, as shown, to allow of the rightangled bend or' passage for the wires at each swing-joint between the tubes, as this subjects the wires to a less injurious bending strain than would otherwise be the case.

It will be readily understood that the posi-V tions of the tubular necks g and sockets u might be relatively reversed, the sockets being on the iittings and the necks on the tubes lc, one being the equivalent of the other; but the arrangement as illustrated is preferred.

It may be understood that my improved arrangement of the wiretubes and swing-joints is not necessarily confined to hollowjointed gas-brackets for conducting gas parallel with the wires, as the fixture may be made for electric light alone, in which case the gas-passages in the upper half of the swing-joints and in the tubes or arms b b may be dispensed with and these parts made solid simply to act as jointed sustainers for the wire-ducts.

Vhat I claim is- 1. rlhe combination, with a swing-jointed bracket having one set of jointed sustaining` arms,of tubular wire-necks on the swing-joints in axial line therewith, lateral wire-passages leading to said tubular wire-necks, and wiretubes extending from joint to joint with one end having a detachable rotating connection with the axial wire-neck, while the other end connects to the lateral wire-passage of the next joint or itting, substantially as set forth.

2. The combination, with a swingjoint gasbracket having tubular necks projecting from the joint-fittings .in line'with the axis of the gas-joints, and a wireway opening on the side of the fitting into said tubular neck, of wiretubes having at one end a cup or socket to fit over said tubular necks, or vice versa, and connected at the opposite end with the lateral wireway on the next fitting, substantially as set forth.

3. The combination,with a swing-joint gasbracket having tubular necks projecting from the joint-iittings in line with the axis of the gas-joints, and a wireway opening on the side of the fitting into said tubular neck, of wiret-ubes having at one end a cup or socket to tit over said tubular necks and connected at the opposite end with the lateral wireway on the next fitting, said neck being formed with circumferential groove, and a setscrew on the cup or socket engaging said groove, substantially as described.

SAMUEL B. H. VANCE.

Vitnesses:

J. T. DENNIs, JAMEs WYATT, Jr. 

